de Sitter and power-law solutions in some models of modified gravity

被引：6
|
作者：
Zhong, Yi [1 ,2 ,3 ]
Elizalde, Emilio [2 ,3 ]
机构：
[1] Lanzhou Univ, Inst Theoret Phys, Lanzhou 730000, Peoples R China
[2] ICE CSIC, Inst Space Sci, Campus UAB,Carrer Can Magrans S-N, Barcelona 08193, Spain
[3] IEEC, Campus UAB,Carrer Can Magrans S-N, Barcelona 08193, Spain
来源：
MODERN PHYSICS LETTERS A | 2016年 / 31卷 / 38期
关键词：
Cosmology solution; nonlocal; mimetic;
D O I：
10.1142/S0217732316502217
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Inspired by some recent works of Lovelock Brans-Dicke (BD) gravity and mimetic gravity, cosmology solutions in extensions of these two modified gravities are investigated. A nonlocal term is added to the Lovelock BD action and Gauss Bonnet (GB) terms to the mimetic action, correspondingly. de Sitter and power scale factor solutions are then obtained in both theories. They can provide natural new approaches to a more accurate description of the unverse evolution.
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收藏
页数：10
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